Stereoselective and Atom-Economic Alkenyl C–H Allylation/Alkenylation in Aqueous Media by Iridium Catalysis
作者:Yinhua Huang、Liangyao Xu、Feifei Yu、Wenzhou Shen、Xiunan Lu、Liyuan Ding、Liangjun Zhong、Guofu Zhong、Jian Zhang
DOI:10.1021/acs.joc.0c00619
日期:2020.6.5
A practical and atom-economic protocol for the stereoselective preparation of various 1,4- and 1,3-diene skeletons through iridium-catalyzed directed olefinic C–H allylation and alkenylation of NH-Ts acrylamides in water was developed. This reaction tolerated a wide scope of substrates under simple reaction conditions and enabled successful gram-scale preparation. Furthermore, an asymmetric variant
开发了一种实用且原子经济的方案,用于通过铱催化的水中NH-Ts丙烯酰胺的定向烯烃C-H烯丙基化和烯基化来立体选择性地制备各种1,4-和1,3-二烯骨架。在简单的反应条件下,该反应可耐受多种底物,并能成功进行克级制备。此外,使用手性二烯-铱配合物作为催化剂,可实现该反应的不对称变体,得到对映体富集的1,4-二烯。